Sram RED 10 Speed Carbon Crank Set - BB30 52T / 36T - 10 Speed - BlackSram RED 10 Speed Carbon Crank Set BB30 52T 36T 10 Speed Black The SRAM Red BB30 Chainset is an innovative, light, high performing chainset which is super stiff. The new SRAM RED Crankset is completely hollow all the way to the spider. Its hidden bolt pattern makes better use of carbon fibre to further improve stiffness and shed weight. The stunning X Glide R chainrings are optimised for use with the YAW Technology in the front derailleur, delivering